Lluis Eriksson (2026). The Yang-Mills Mass Gap on the Lattice: A Conditional Reduction via Witten Laplacian and Constructive Renormalization. AIRR.SCIENCE, ARR-2026-46C3FRWKDN91YBNR, v1. https://airr.science/papers/ARR-2026-46C3FRWKDN91YBNR/versions/v1/ Archived manuscript; ARR-2026-46C3FRWKDN91YBNR v1. Not peer reviewed by AIRR. Historical import; not assessed by AIRR.